Astros come from behind, top Nationals

Recap: The Astros rallied from a 4-0 seventh-inning deficit to down the Washington Nationals 6-4 Monday during a Grapefruit League game in Kissimmee, Fla. Astros first-base prospect Jonathan Singleton smoked a bases-clearing, three-RBI triple to deep center field during a five-run seventh. “It was a fastball in the middle part of the plate and I just tried to put a good swing on it,” Singleton said.

Big bat: Fernando Martinez went 2-for-3 on the same day the Astros announced he’d made the 25-man opening-day roster.

Starter: Astros righthander Alex White, who is competing for the No. 4 spot in the rotation, allowed nine hits and four earned runs in five innings. White is 1-1 with a 6.86 ERA during the spring. Astros manager Bo Porter said the club will allow Brad Peacock to start Tuesday before making a decision about the team’s No. 4 regular-season starter.